/**
* \param rect optional for picking (can be NULL).
*/
void view3d_winmatrix_set(ARegion *ar, View3D *v3d, const rctf *rect)
{
RegionView3D *rv3d = ar->regiondata;
rctf viewplane;
float clipsta, clipend;
bool is_ortho;
is_ortho = ED_view3d_viewplane_get(v3d, rv3d, ar->winx, ar->winy, &viewplane, &clipsta, &clipend, NULL);
rv3d->is_persp = !is_ortho;
#if 0
printf("%s: %d %d %f %f %f %f %f %f\n", __func__, winx, winy,
viewplane.xmin, viewplane.ymin, viewplane.xmax, viewplane.ymax,
clipsta, clipend);
#endif
if (rect) { /* picking */
rctf r;
r.xmin = viewplane.xmin + (BLI_rctf_size_x(&viewplane) * (rect->xmin / (float)ar->winx));
r.ymin = viewplane.ymin + (BLI_rctf_size_y(&viewplane) * (rect->ymin / (float)ar->winy));
r.xmax = viewplane.xmin + (BLI_rctf_size_x(&viewplane) * (rect->xmax / (float)ar->winx));
r.ymax = viewplane.ymin + (BLI_rctf_size_y(&viewplane) * (rect->ymax / (float)ar->winy));
viewplane = r;
}
if (is_ortho) {
wmOrtho(viewplane.xmin, viewplane.xmax, viewplane.ymin, viewplane.ymax, clipsta, clipend);
}
else {
wmFrustum(viewplane.xmin, viewplane.xmax, viewplane.ymin, viewplane.ymax, clipsta, clipend);
}
/* update matrix in 3d view region */
glGetFloatv(GL_PROJECTION_MATRIX, (float *)rv3d->winmat);
}
void setwinmatrixview3d(ARegion *ar, View3D *v3d, rctf *rect) /* rect: for picking */
{
RegionView3D *rv3d= ar->regiondata;
rctf viewplane;
float clipsta, clipend, x1, y1, x2, y2;
int orth;
orth= ED_view3d_viewplane_get(v3d, rv3d, ar->winx, ar->winy, &viewplane, &clipsta, &clipend);
rv3d->is_persp= !orth;
#if 0
printf("%s: %d %d %f %f %f %f %f %f\n", __func__, winx, winy,
viewplane.xmin, viewplane.ymin, viewplane.xmax, viewplane.ymax,
clipsta, clipend);
#endif
x1= viewplane.xmin;
y1= viewplane.ymin;
x2= viewplane.xmax;
y2= viewplane.ymax;
if(rect) { /* picking */
rect->xmin/= (float)ar->winx;
rect->xmin= x1+rect->xmin*(x2-x1);
rect->ymin/= (float)ar->winy;
rect->ymin= y1+rect->ymin*(y2-y1);
rect->xmax/= (float)ar->winx;
rect->xmax= x1+rect->xmax*(x2-x1);
rect->ymax/= (float)ar->winy;
rect->ymax= y1+rect->ymax*(y2-y1);
if(orth) wmOrtho(rect->xmin, rect->xmax, rect->ymin, rect->ymax, -clipend, clipend);
else wmFrustum(rect->xmin, rect->xmax, rect->ymin, rect->ymax, clipsta, clipend);
}
else {
if(orth) wmOrtho(x1, x2, y1, y2, clipsta, clipend);
else wmFrustum(x1, x2, y1, y2, clipsta, clipend);
}
/* update matrix in 3d view region */
glGetFloatv(GL_PROJECTION_MATRIX, (float*)rv3d->winmat);
}